1The categories are based on the average wage for each occupation surveyed, which may include workers with earnings both above and below the threshold. The
average wages are based on the estimates published in the "National Compensation Survey: Occupational Earnings in the United States, 2009." See Technical Note
for more details.

NOTE: Because of rounding, sums of individual items may not equal totals. For definitions of major plans, key provisions, and related terms, see the "Glossary of
Employee Benefit Terms" at www.bls.gov/ncs/ebs/glossary20092010.htm.